Verify the order details
Review the product, edition, server address, period and payment currency. Confirm the seller identity and displayed renewal terms. A typo in an IP address may prevent activation on the intended machine.
Understand the payment result
Bank authentication can be part of a normal card payment. After completing it, wait for the account order status to update. A browser success page by itself does not prove that the payment provider confirmed the charge.
Avoid duplicate purchases
If the payment or activation outcome is unclear, check the existing order before starting again. Send support the order reference and the time of the attempt; never include a full card number.